Tennis Training Aid

ABSTRACT

A tennis training aid can be used to teach proper wrist and racket position for swings such as a forehand ground stroke, two-handed backhand stroke, or volley. Such a tennis training aid is provided herein and includes a forearm attachment member operable to be releasably attached to a forearm of a player. In some implementations, the tennis training aid may also include a tether attachment having a first and second end, such that the first end is attached to the forearm attachment member and the second end is attached to a tennis racket throat in order to hold the wrist of the forearm holding that racket at a desired angle so as to allow the player to practice a plurality of different tennis strokes.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is: (1) a continuation of application Ser. No.11/938,074, filed Nov. 9, 2007, now U.S. Pat. No. 7,559,859, which is aContinuation-in-Part of application Ser. No. 11/580,971, filed Oct. 13,2006, now U.S. Pat. No. 7,445,570; and (2) a continuation of applicationSer. No. 12/290,851, filed Nov. 3, 2008, published as US2009/069128A1,which is a continuation of application Ser. No. 11/580,971, filed Oct.13, 2006, which all claim the benefit of U.S. Provisional ApplicationNo. 60/727,413 filed Oct. 17, 2005; and all of which are incorporatedherein by reference in entirety.

FIELD

The present invention relates to methods and devices useful fortraining, such as for training proper form when using a piece ofathletic equipment.

BACKGROUND

There are several flaws that are common among tennis players,particularly those players just learning the game. Many of these flawsoccur in the swing or stroke of a player, due in part to that playerhaving improper positioning and/or movement of the wrist and/or racket.This can occur during a forehand ground stroke, a two-handed backhandstroke, one-handed backhand stroke, or a volley, for example.

For a forehand ground stroke, the recommended wrist position has thewrist cocked or laid-back throughout the impact/contact position andthroughout the forehand stroke. Many recreational players incorrectlysnap their wrist forward, this forward movement of the wrist andcorresponding decrease in angle being called “flexion.” The palm of thehand typically is moved toward the front of the forearm (palmar surfaceof the forearm), resulting in an undesired movement in the forehandground stroke that often is difficult for players to eliminate. Too muchmovement of the wrist at impact, or an improper wrist angle at impact,can adversely affect the control, power, and accuracy of a player, andeventually can affect that player's success and enjoyment of the game.

A similar problem exists for a two-handed backhand ground stroke,particularly for the non-dominant hand. A flexion of the non-dominanthand can occur, as well as an improper setting of the wrist angle ofthat non-dominant hand. These flaws can again impact the control, power,and accuracy of a player.

Other common flaws occur during volley. A volley is defined as a shotthat is hit prior to the ball bouncing, and typically is hit close tothe net. Usually a much shorter stroke should be employed, and the ballis hit with the racket titled upwards. Many players incorrectly droptheir racket head during the volley stroke and employ too much wristmovement during the stroke. Good volley technique usually implies thatthe player keeps the racket tilted diagonally upwards, with the rackettip pointing away from the player (and slightly upward). It is commonthat players use too much wrist movement during the stroke. Many playersalso incorrectly drop their racket by moving their wrist downward duringthe volley stroke.

A number of different training aids have been presented in the prior artto attempt to correct for some of these problems. There are a number ofdeficiencies with these devices, however, which have prevented theirwidespread acceptance and use. For example, many of these devices areuncomfortable to wear and can feel unnatural to use. Some of thesedevices are unnecessarily complicated. Some of these devices do notprovide enough guidance as to the proper technique to train or drillwith. Another problem is that a user or trainer must purchase several ofthese training aids to attempt to address these flaws. Some lack theability to control or guide the hand or wrist while playing, therebylimiting their effectiveness.

It would therefore be desirable to provide a tennis training aid that isoperable in multiple usage modes to allow a player to easily,effectively and comfortably practice different types of tennis strokes.

SUMMARY OF THE INVENTION

In an embodiment of the present invention, a tennis training aid isprovided. The tennis training aid includes a forearm attachment memberoperable to be releasably attached to a forearm of a player. The tennistraining aid also includes a tether attachment having a first and secondend, such that the first end is attached to the forearm attachmentmember and the second end is attached to a tennis racket throat in orderto hold the wrist of the forearm holding that racket at a desired angleso as to allow the player to practice a plurality of different tennisstrokes.

These and other features, advantages and embodiments will be appreciatedby a review of the following detailed description and related drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a view of a tennis training aid that can be used in accordancewith one embodiment of the present invention.

FIG. 2 is another view of the tennis training aid of FIG. 1.

FIG. 3 is another view of the tennis training aid of FIG. 1.

FIG. 4 is another view of the tennis training aid of FIG. 1.

FIG. 5 is another view of the tennis training aid of FIG. 1.

FIG. 6 is another view of the tennis training aid of FIG. 1.

FIG. 7 is a view of a tennis training aid that can be used in accordancewith another embodiment of the present invention.

FIG. 8 is another view of the tennis training aid of FIG. 7.

FIG. 9 is another view of the tennis training aid of FIG. 7.

FIG. 10 is another view of the tennis training aid of FIG. 7.

FIG. 11 is a view of an alternative forearm attachment member that canbe used with the tennis training aids of FIGS. 1 and 7.

FIG. 12 a illustrates an alternate embodiment of the present invention.

FIG. 12 b is a view of the alternate embodiment of FIG. 12 a configuredin a usage mode for practicing a forehand stroke.

FIG. 12 c is a view of the alternate embodiment of FIG. 12 a configuredin a usage mode for practicing a two-handed backhand stroke.

FIG. 12 d is a view of the alternate embodiment of FIG. 12 a configuredin a usage mode for practicing a volley stroke.

FIG. 13 a illustrates an alternate embodiment of the present invention.

FIG. 13 b is an illustration of a single-tether embodiment of thepresent invention.

FIG. 13 c is an illustration of a dual-tether embodiment of the presentinvention.

FIG. 13 d is an illustration of a Y-tether embodiment of the presentinvention.

FIG. 13 e is an illustration of a first step for attaching a tether tothe throat of a racket according to a preferred embodiment.

FIG. 13 f is an illustration of a second step for attaching a tether tothe throat of a racket according to a preferred embodiment.

FIG. 13 g is an illustration of a third step for attaching a tether tothe throat of a racket according to a preferred embodiment.

FIG. 13 h is an illustration of a fourth step for attaching a tether tothe throat of a racket according to a preferred embodiment.

FIG. 13 i is a view of a fifth step for attaching a tether to the throatof a racket according to a preferred embodiment.

FIG. 13 j is an illustration of a single-tether embodiment of thepresent invention, wherein the single-tether is tied to the throat ofthe racket.

FIG. 13 k is an illustration of a dual-tether embodiment of the presentinvention, wherein the dual-tether is tied to the throat of the racket.

FIG. 13 l is an illustration of a single-tether embodiment of thepresent invention, wherein the single-tether is attached to the throatof the racket via an attachment device.

FIG. 13 m is an illustration of a dual-tether embodiment of the presentinvention, wherein the dual-tether is attached to the throat of theracket via an attachment device.

FIG. 13 n is a view of the alternate embodiment of FIG. 13 a configuredin a usage mode for practicing a one-handed forehand stroke.

FIG. 13 o is a view of the alternate embodiment of FIG. 13 a configuredin a usage mode for practicing a one-handed backhand stroke.

FIG. 13 p is a view of the alternate embodiment of FIG. 13 a configuredin a usage mode for practicing a forehand volley.

FIG. 13 q is a view of the alternate embodiment of FIG. 13 a configuredin a usage mode for practicing a backhand volley.

FIG. 13 r is a view of the alternate embodiment of FIG. 13 a configuredin a usage mode for practicing a two-handed forehand stroke.

FIG. 13 s is a view of the alternate embodiment of FIG. 13 a configuredin a usage mode for practicing a two-handed backhand stroke.

DETAILED DESCRIPTION OF EXEMPLARY IMPLEMENTATIONS

The present invention will now be described in detail with reference tothe drawings, which are provided as illustrative examples of theinvention so as to enable those skilled in the art to practice theinvention. Notably, the figures and examples below are not meant tolimit the scope of the present invention. Moreover, where certainelements of the present invention can be partially or fully implementedusing known components, only those portions of such known componentsthat are necessary for an understanding of the present invention will bedescribed, and detailed descriptions of other portions of such knowncomponents will be omitted so as not to obscure the invention. Preferredembodiments of the present invention are illustrated in the Figures,like numerals being used to refer to like and corresponding parts ofvarious drawings.

Systems and methods in accordance with various embodiments of thepresent invention can overcome these and other deficiencies in prior arttraining devices. A single training aid can be used to help players feelthe correct wrist position throughout various swings, and can reduce thelikelihood of improper movements of the wrist during the stroke. Such adevice can be used to ensure a proper wrist position, such that aplayer's racket faces the ball squarely at impact, and that the playercontacts the ball just in front of the player's body. Maintaining aproper and stable wrist angle position throughout the swing, andespecially through the impact/contact area, can be vital to ensure solidball contact, the ability to consistently hit the ball at an intendedtarget, sufficient racket stability/power (as racket stability at impactgreatly increases power), control/accuracy, and the proper “feeling”when hitting the ball. Another benefit derived from using the trainingaids of the present invention correctly on both forehand and backhandtennis strokes is that they enable the tennis racket to desirably imparttopspin to the tennis ball, thereby better controlling the direction andaccuracy of the flight of the ball.

One area discussed above that can be addressed is the forehand groundstroke. In order to properly train a player, it can be desired to setthe player in the proper “extension” of the wrist and fix the wrist inthis position. A laid-back wrist is referred to as “extension” of thewrist. Extension increases the amount of angle from moving the back ofthe hand toward the dorsal surface of the forearm. A proper initialangle of the wrist during the forehand ground stroke is typically about40-75 degrees of “extension.”

It also can be desirable to reduce or eliminate flexion of the wristduring the stroke. It can be desirable to reduce or eliminate the user'sability to “flex” the wrist as the user attempts to help/hit the ballduring the hitting zone. For example, it can be desirable to set theplayer into a “fixed” position, such as a position with about 40 to 75degrees of extension of the wrist depending on the desired wrist angleof the user, and help the player control “flexing” the wrist forwardduring the entire stroke. For instance, if the player's wrist isinitially set at around 60 degrees of extension, and the player movesthe wrist significantly forward to 20 degrees of extension (an undesiredmovement), it would be desirable for the player to feel a device helpingthe player control the wrist from any undesired movements towardflexion. Eliminating excessive wrist movements and setting the playerinto a proper wrist angle can help in numerous areas including, improvedracket stability, ball control, solid ball contact, racket facing theball longer during impact, control, overall improved technique, and mostimportantly help the player “feel” what its like to hit a very solidshot.

A tennis training aid 100 in accordance with one embodiment is shown inFIGS. 1 and 4. The device includes a forearm attachment member 106designed to be attached to the forearm 104 of a player 102. This devicealso includes a wrist positioning member 110 operable to be connectedbetween the forearm attachment member 106 and the player's racket 108when the player is holding the racket in the respective hand.

The device also can include a racket connector 112 shaped to be placedbetween the strings of the racket 108 in order to provide a connectionpoint(s) for the wrist positioning member 110. It can be seen that whenthe wrist positioning member 110 is properly connected between theforearm attachment member 106 and the racket 108, the player's wrist ismaintained at a position held back toward the forearm, which is thecorrect position for a forehand ground stroke.

This exemplary training aid is shown in more detail in FIG. 2. Referencenumbers are carried over where appropriate for simplicity. Here it canbe seen that the forearm attachment member 106 includes first and secondforearm straps 200, 202. As shown, these straps can take the form ofvinyl straps having Velcro attachment regions allowing the straps to beeasily and quickly fastened about the forearm 104 of the player. Thesestraps can be desirable due to their ease of connection and release,their ability to hold the forearm attachment member firmly in placeduring the stroke, and their ability to allow the underlying skin tobreathe. It should be understood that these straps are merely exemplary,and that a number of other fastening mechanisms could be used. Forexample, a single fastening member can be used to attach the forearmattachment member to the arm of the player. Alternatively, more than twostraps can be used. The straps can be formed of any appropriatematerial, such as leather, rubber, cloth, plastic, or any other flexibleor formable material capable of holding the forearm attachment member inplace. The fastening mechanism also can be other any appropriatemechanism, such as may include snaps, buttons, ties, clamps, zippers, orclasps. The forearm attachment member also can take the form of a gloveor sleeve.

The wrist positioning member 106 also can include a forearm body 204.The forearm body here is shown as an elongated, rigid member (such as ametal or plastic bar) capable of being attached to the forearm via theforearm straps 200, 202. Any of a number of other materials and designscan be used, such as aluminum or leather members of any appropriateshape. The forearm body 204 can include at least one positioning slot206, but for many embodiments can include a plurality of positioningslots or an adjustable positioning slot. The positioning slot(s) 206 canbe used to receive an end of the wrist positioning member 110. Havingmore than one slot, or an adjustable slot, allows the position of thewrist positioning member 110 to be adjusted relative to the forearmattachment member 106, which can allow for fitting of the training aidbased on the size, racket, and comfort of the player. Another view 500of the forearm attachment member 106 is shown in FIG. 5. The forearmbody 204 can include padding, such as foam or another padding material,positioned adjacent the arm of the player in order to improve theoverall comfort level for the player.

The forearm body 204 in this embodiment is shown in FIG. 6 to extendaround the forearm straps to form a sort of oval shape. This provides anumber of advantages. First, the shape provides a spacing between theconnection slots 206 and the forearm 104, which allows a forearmconnector 208 of the wrist positioning member to be placed into one ofthe slots without contacting the forearm. Without providing such aspace, the forearm connector might apply pressure to the forearm that isuncomfortable for the player. The shape also provides a raised androunded end 214 adjacent the wrist of the player, such that when thewrist is laid back the back of the players hand rests against thisraised and rounded “bumper” or “brace” which adds the function ofstabilizing the wrist through contact with the ball thereby giving theplayer a sense of stability, power and increased confidence. Also thisbrace is firm but comfortable upon contact with the players hand so thatthe player does not experience any sharp edges or unnecessary pressure.The forearm body 204 also can include a ridge 216 shaped to bepositioned between the forearm straps 200, 202. This ridge can keep thestraps substantially in place, while allowing for some lateral movementof the straps in order to increase the level of comfort for the user.

The wrist positioning member 110 in this embodiment is shown to includea slightly elastic cord 210 positioned between the forearm attachmentmember 208 and the racket connector 112. The cord can be tied orotherwise fastened to the forearm connector 208. The cord can be made ofany appropriate material, such as vinyl, rubber, or leather. The forearmconnector in this embodiment is a rigid member having an extensionmember 600 (shown in FIG. 6) adapted to be received by one of the slots206 in the forearm body 204. The extension member 600 can have a lip, orother shape, such that when the extension member is positioned in a slot206 and pulled toward the racket, the extension member is held in theslot 206. It should be understood that a number of other ways forreleasably attaching the wrist positioning member to the forearmattachment member can be used within the scope of the variousembodiments, such as by using clips, clasps, snaps, ties, or anyappropriate fastening mechanism. As can be seen in FIG. 6, the forearmconnector 208 can have a C-shape with a portion 602 that issubstantially parallel with the cord of the wrist positioning memberwhen attached to the racket, such that the portion 602 acts as a leverallowing the racket to apply side-to-side pressure on the connectionmember. If the forearm connector is loosely held in the slot, or if theforearm connector includes a rotatable portion, the forearm connector208 can be allowed to rotate in or about the slot 206 of the forearmbody 204, allowing for some side-to-side movement of the racket. Thiscan provide a more natural feel to the swing, providing some freedom ofmovement, while still holding the racket in the appropriate position. Asreferred to herein, the “appropriate position” and other such terms ismeant to refer to a small range of positions over which the racket isdetermined to be in an acceptable position relative to the player. Theracket is not limited to a single, precise position but can be allowedto move over a slight range to allow for a level of comfort and naturalease for the player.

As mentioned above, the cord 210 in this embodiment can be slightlyelastic. This elastic is precisely measured in length and stretchingcharacteristics so that there is a balance as to the amount ofelasticity allowed in the tether. The more elasticity in the cord thegreater the stretching characteristics and the less limiting or holdback there is in the player's tennis stroke. Having the cord tooelastic, allows the racket to move out of an acceptable position, andcan allow the player to attempt to “push” the ball by flexing the wristwhich is an incorrect tennis ball stroking movement. One way to allowthe user to adjust the amount of tension applied through the cord is touse a tension control member 212. As shown, the tension control member212 can be a small piece, such as a band or bar made out of a materialsuch as plastic, which connects between portions of the cord in order tocontrol the amount of tension in the cord. As closer view 400 can beseen in FIG. 4. As shown, the member 212 can be slid toward the racketend to increase tension, and can be slid toward the player to reducetension. The tension control member can include a releasable mechanism,such as a spring-loaded button, that allows the user to move the memberto adjust tension, but that prevents the member from moving when theuser releases the member in the desired position.

The racket connector 112 in this embodiment is an elongated U-shapedmember made of a substantially rigid material, such as plastic oraluminum. As shown in FIG. 3, the racket connector can be shaped to fitin gaps 300 between the strings of a standard tennis racket. As can beseen in FIGS. 1 and 2, each end of the racket connector can have a lip,groove, or other mechanism for receiving and connecting the wristpositioning member to the racket. In this embodiment, each end of theracket connector has a groove shaped to receive the cord 210, such thatthe cord loops from one end of the racket connector to the other,thereby applying a substantially even force to both sides of the racketand preventing the racket from pivoting about the axis of the handle.There can be any of a number of other ways of attaching the wristpositioning member to the racket, with varying degrees of success. Forexample, there can be separate racket connectors, such as clamps, thatattach to each side of the racket, or to the strings of the racket, forreceiving the cord. There also can be connectors that are part of theracket. Alternatively, the cord of the wrist positioning member can beconfigured to wrap around each side of the racket, or about the strings,and attach to itself via a tie or clasp, without requiring an additionalconnection mechanism. Other connection approaches would be obvious toone of ordinary skill in the art in light of the discussion herein.

Such a device can be used to help a player achieve the desired movementfor a forehand ground stroke. The device can control the player's wristmovements, substantially preventing improper wrist movement, whilemaintaining the proper position of the racket. The forearm attachmentmember, which can be a removable orthosis such as a brace or splint, canbe used with the wrist positioning member to hold the wrist in a properposition during the full swing. The wrist positioning member can pull onthe racket and consequently position the player's wrist in the desiredposition of extension. The device can be comfortable for the playerwhile gripping the racket and taking a full swing at the ball.

The forearm attachment member, which again can be a removable orthosissuch as a brace or splint, also can be used to hold the wrist in properposition during a two-handed backhand swing. The wrist positioningmember can be attached to the racket in the same way in order toposition the player's wrist in the desired position of extension. Thetraining aid can be worn while hitting the tennis ball and made to beuniquely comfortable so that the player is comfortable gripping theracket and taking a full swing at the 2-handed backhand.

Such a device also can be worn equally well on the non-dominant hand toset the wrist at the preferred 40-75 degree “extension” of the wrist forthat hand, as is desirable for a two-handed backhand. Fixing thenon-dominant wrist at this desired angle can allow the player to havesolid ball contact, improved accuracy/consistency, improved racketstability, improved control, and an overall improved technique whilehitting a two-handed backhand.

In essence, the non-dominant wrist can be used like the wrist on theforehand ground stroke, whereby an initial angle of 40-75 degrees of“extension” is employed during the stroke. The device also can greatlyreduce any “flexion” of the wrist while swinging.

As discussed above, players also can have problems with achieving properform during a volley. It can be desirable to set the wrist and racketangle in an initial upward position, such as a position that is notquite vertical but somewhere halfway between vertical and across, withthe tip pointed away from the player. It also can be desired to restrictdownward movement of the wrist during the volley stroke. This downwardmovement is called ulnar deviation, whereby the player keeps his/herhand facing the ball but incorrectly drops the wrist position during thestroke. A device including a forearm attachment member as describedabove can be used to greatly reduce ulnar deviation of the wrist duringthe volley stroke and make it simple for the player to keep the racketpointed diagonally upward. This volley device can pull upward on theracket, not allowing the racket to drop.

FIG. 7 shows such a volley training aid 700. In this embodiment, thedevice includes the same (or a similar) forearm attachment member 106described above for use with the forehand ground stroke and/ortwo-handed backhand stroke. The volley device, however, can include adifferent wrist positioning member 702 for connecting the racket 108 tothe forearm attachment member 106. In this embodiment, the forearmattachment member 106 is rotated so that the forearm body 204 is on thesame side of the forearm as the player's thumb, instead of being alignedwith the middle knuckles as for the forehand ground stroke. Another view800 of the alignment is shown in FIG. 8.

The wrist positioning member 702 connects between the slots in theforearm body 204 and a single side of the racket 108. Here, a singleracket connector 704 is used to attach the wrist positioning member to aside of the racket. This racket connector 704 is shown to attach about aside of the racket frame, but could attach at any appropriate place aslisted above, such as between or around a string(s) of the racket 108. Acloser view 900 of the racket connector is shown in FIG. 9. The wristpositioning member again can include a cord or other elongated material,which can have an amount of elasticity as described above. The racketconnector 704 can be a separate element, or can be part of the racketconnector(s) used for the forehand ground stroke and/or two-handedbackhand stroke. The racket connector 704 can be made of any appropriatematerial, such as plastic, leather, vinyl, or cloth, and can attach tothe racket using any appropriate connection means, such as a tie, snap,clasp, or button. The forearm connector 706 of the wrist positioningmember again can be a rigid member having an extension member adapted tobe received by one of the slots in the forearm body. The forearmconnector 706 can have a C-shape with a portion that is substantiallyparallel with the wrist positioning member when attached to the racket,such that the member acts as a lever allowing the racket to applyside-to-side pressure on the forearm connector, whereby the forearmconnector can rotate with respect to the forearm body. A rotated forearmconnector 706 is shown in the view 1000 of FIG. 10.

Such a device can be used to keep the wrist in the desired position, andto help the player control wrist position and reduce ulnar deviationduring a volley. The wrist positioning member 702 can help to keep theracket in a diagonally upward position when used for the volley stroke,and can help the player greatly reduce downward movement of the wristduring the entire stroke. The wrist positioning member can attach to theside of the racket at any appropriate location, such as at the throat orshoulders as referred to in the art. The wrist positioning memberalternatively can attach at any other appropriate location on the racketfor maintaining the racket in the desired half-up position throughoutthe stroke. It also is possible to use both the forehand and volleywrist positioning members together, in order to teach proper wristposition for a forehand volley.

Although the figures show the device(s) being used on the right hand,the forearm portions can be designed to be worn equally well with theleft hand, allowing one device to be used for training a number ofplayers regardless of the preferred hand of a player. The forehand,backhand, and/or volley devices can be symmetrical so as to be used witheither hand equally well, and to be equally comfortable in both cases.In addition, when using the device for two-handed backhands, a playersimply can wear the device on the non-dominant hand and practice thatparticular stroke. For example, a right-handed player can wear thedevice on the left hand while practicing a two-handed backhand.

In another embodiment, the forearm attachment member can include a handextension 1100 as shown in FIG. 11. The hand extension can be designedto extend from the forearm to a region near the knuckles of the player.The extension can be formed at an angle relative to the forearm of theplayer, in order to maintain the wrist of the player bent at anappropriate angle, as described above. This extension can attach aroundthe hand of the user using straps or other devices such as thosedescribed above for attaching the forearm attachment member. The handextension can be used with the device(s) described above, or can be usedin place of the wrist positioning members, as the wrist can be held atthe desired angle such that the wrist positioning members may not benecessary. The angle of the extension portion also can be adjustableusing mechanisms such as those described above for altering and/ormaintaining position.

FIGS. 12 a-d illustrate another embodiment of a tennis training aid1200, according to the present invention. In this embodiment, forearmbody 204 and wrist positioning member 110 are replaced by a rigid,lightweight forearm body 1240 and a wrist positioning member 1210,respectively. In this embodiment, wrist positioning member 1210 includesa Y-shaped tether 1220.

Forearm body 1240 comprises locking mechanism 1242 and volley attachmenthook 1244. As discussed below, the volley attachment hook 1244 allowsthe tennis training aid 1200 to operate as a 2-in-1 trainer that easilyadjusts for all ground strokes and volleys. In one embodiment, a pair ofvolley attachment hooks, one located on each side of the forearm body1240 may be used. Each hook 1240 may be on a side of the body to line upthe edge of the racket so that a user gets a direct upward pull on hiswrist (or so that the wrist cannot move down below the position that isset). The dual hook arrangement allows for both a left-handed orright-handed volley configuration with equal ease.

Forearm body 1240 is preferably made from a molded plastic or nyloncompound that is anatomically shaped, with a half-cuff that rests on thelower forearm as a platform for attachment of the tether 1220. Two,sufficiently wide and padded, Velcro® closure straps 1246, 1248 arecoupled to the body 1240. Strap 1248 is located near the distal portionof the body 1240 that engages a user's wrist, as shown in FIG. 12 b.Strap 1246 is located near the proximal portion of the body 1240 thatengages a user's mid-forearm, as shown in FIG. 12 b. Straps 1246, 1248provide a comfortable and easily removable attachment to the user's armand are flexible and adjustable so as to comfortably fit arms of varioussizes. In one embodiment, the straps 1246, 1248 may include logos that aplayer may use as pull tabs for donning the cuff. In an alternateembodiment, the forearm body comprises a full cuff with an attachmentallowing the tether 1220 to be placed under and around to the top of theforearm.

In one embodiment, a non-slip, padded, neoprene-type material may beattached to or integrated into the interior cuff of the body 1240 forengaging a user's forearm. The material may comprise open-cell and/orperforated material that breathes air and allows for evaporation ofperspiration. Additional padding or a gel pouch may also be disposed atdistal portion of the body 1240 near a user's wrist to provide acomfortable “bumper” or “brace” on the dorsal hand at full wristflexion, which adds important function as well as comfort.

Tether 1220 includes a first portion 1222 that includes a plurality ofcolored markings 1224 that allow a user to easily engage the positioningmember at precise locations corresponding to different usage modes orset-up positions, such as a forehand position, a backhand position and avolley position. In one embodiment, the first portion 1222 of the tetherfurther includes an elastic insert or member 1234, which reduces shockand enables a realistic release allowing the tennis training aid tofunction smoothly and comfortably. The tether with its embedded elasticallows for nearly an infinite amount of adjustments as opposed to a fewlimited or pre-set adjustments.

Tether 1220 further includes a second portion 1226 that includes a pairof string hooks 1230 that selectively connect to racket strings 1228.The second potion 1226 of the tether 1220 is slidably coupled to thefirst portion 1228 of the tether 1220, for example, by use of a threadedplastic eyelet 1232. The “Y”-shaped tether 1220 and slidable couplingaccommodates different racket face angles and distributes the load fromball contact evenly.

Hooks 1230 are preferably plastic “clip on” type hooks that are easilydeployable and allow for a quick release. Hooks 1230 attach the tether1220 to the tennis racket strings on opposing sides of the racket tocreate an accurate volley grip and set-up. The string hooks preferablyinclude a small detent to provide a firm hold. String hooks 1230 arealso preferably pliable in order to firmly engage all standard stringgauges, while preventing damage to tennis racket strings. The stringhooks 1230 allow attachment of tether to the tennis strings in a varietyof locations for versatility of player drills. In other embodiments, thehooks 1230 may be replaced by other conventional attachment members forattaching the tether to the racket strings, sides of the racket, throatof the racket, or to the top of racket handle.

As illustrated, tether 1220 locks onto forearm body 1240 by use of afastening or locking mechanism 1242. The type of swing a user desires topractice will dictate where in locking mechanism 1242 tether 1220 shouldbe fastened. Moreover, a user may lock tether 1220 onto lockingmechanism 1242 according to colored markings 1222, wherein individualcolored markings 1222 correspond to particular usage modes or strokes.For example, a red marking may correspond to a forehand stroke, shown inFIG. 12 b, a black marking may correspond to a two-handed backhandstroke, shown in FIG. 12 c, and a green marking may correspond to avolley stroke, shown in FIG. 12 d, where the slack portion of tether1220 may be secured around volley hook 1244 as shown. In otherembodiments, different types of coding may be used to correspond todifferent types of usage modes or strokes.

Locking mechanism 1242 is preferably located near the proximal end ofthe body 1240. This location allows the tether to be attached near auser's forearm (not to the wrist). This location creates a correctpulling angle on the racket for proper wrist lay back. This combinedwith the “Y” tether design keeps the racket square through the hittingzone and does not allow the wrist to drop inappropriately. The tetherangle is much improved over other products since it is angled steeperaway from the arm because it attaches higher up the cuff/forearm,thereby giving a stronger leverage on the tennis racket. Moreover, whilethe device will typically pull the wrist back about 40-75 degrees, thereleasable locking mechanism and tether will actually allow for nearlyan infinite number of adjustments.

Locking mechanism 1242 may be embodied in various ways. In oneembodiment, a “marine-type” line and cleat (“jam cleat”) mechanism isused. In such an embodiment, when downward pressure is placed on tether1220 at the same time as a user's wrist cocks forward, tether 1220 istightly locked into the jam cleat to hold the racket in the desiredposition. In another embodiment, a “cam lock-type” line and cleatmechanism is used. In such an embodiment, tether 1220 feeds under andthrough this cam mechanism and, by pushing down on tether 1220 with thiscam lock, tether 1220 is pinched down and locked into place. In oneembodiment, the jam cleat includes a stamped arrow or triangle on top ofthe bridge that may be aligned with coded portion of the tether todenote accurate, micro-tether adjustment settings. In alternateembodiments, other conventional fastening mechanisms may be used toanchoring the tether to the top of the cuff such as hook-and-ladder;peg-in-slot and male-female clips.

In operation, a user may slide the forearm body 1240 over the user'splaying hand (proximal end first) and set the distal end just behind thewrist bone (styloid). A user may then tighten and fasten strap 1248,followed by strap 1246, so that the forearm body 1240 is comfortably,but firmly positioned on the user's forearm. The user then pulls theslack out of the tether 1220 to the desired laid-back or up-cocked wristposition. The color coded portions 1224 may guide the user in thisprocess. The user will then push down on the tether 1220 to engage itwith the locking mechanism 1240 (e.g., jam cleat). The user can thencock his wrist forward to lock the tether into the jam cleat.

For practicing a forehand stroke, the user may attach both string hooks1230 to the second cross string at the outermost points on the secondstring closest to the frame, as shown in FIG. 12 b (or another desiredcross string, which may depend, for example on the racket and userpreference). The user will hold the racket in a forehand grip until thecorresponding colored mark 1224 (e.g., a red mark) appears in the jamcleat 1240. The user then pulls the remaining slack out of the tetherand locks it in place. The tennis training aid 1200 will then guide theuser through a proper forehand stroke motion, while keeping the wrist atan optimal angle.

For practicing a one-handed backhand stroke, the user may use the sameset-up as a forehand stroke. With the racket cradled in a forehand grip,the user may simply rotate the racket counter-clockwise until the racketsits in a proper one-handed backhand position. In this position, thestring hooks 1230 and “Y” tether 1220 will sit behind the racket face.Holding the racket in the correct one-handed position, the tennistraining aid 1200 will guide the stroke as the user accelerates from lowto high through the tennis ball, while keeping the wrist at an optimalangle. The tether 1220 with its embedded elastic pulls the wrist backand up throughout a full range of motion. On ground strokes this mayrange from less than 40 degrees of wrist pull back to up to and beyond70 degrees of wrist pull back.

For practicing a two-handed backhand stroke, the user may attach thetennis training aid 1200 to the non-dominant forearm, as shown in FIG.12 c. The set-up procedure will be substantially similar to the forehandset-up procedure with the exception that a different correspondingcolored mark 1224 (e.g., a black mark) will be aligned with the jamcleat 1240.

For practicing volleys, the user may begin in the forehand position.From the forehand position, the user may remove the bottom string hook1230, move it over the racket and connect it to the string on theopposite side of the racket, as shown in FIG. 12 d. The user will thenalign a different corresponding colored mark 1224 (e.g., a green mark)with the jam cleat 1240 and lock into position. The user will swing theslack portion of tether 1220 around volley hook 1244. In this position,the tether 1220 will pull up the edge of the racket to a correctposition for practicing a volley stroke. In an alternate embodiment, auser may switch into a volley usage mode in a faster setup” by simplyshifting to a volley grip and tightening the tether by pulling the frontend of the tether around the volley hook resulting in the racket cockingupwards. In this way, the user does not have to move the string hooks orswing them around the racket.

In this manner, the present invention allows a user to move from aground stroke training mode to a volley training mode, while beingequally beneficial in improving both strokes. The tether and lockingmechanism position the wrist back for ground strokes and the tether andvolley attachment hook cooperatively position the wrist up for volleys.The present invention adjusts to fit each person individually and alsoadjusts for each different tennis stroke.

In FIG. 13 a, an illustration of another embodiment of the presentinvention is provided. Similar to the embodiment illustrated in FIG. 12a, the tennis training aid 1300 shown in FIG. 13 a includes a forearmbody 1340 comprising a locking mechanism 1342 and straps 1346, 1348, asshown. Tennis training aid 1300 also includes a tether 1320 coupled toforearm body 1340 via locking mechanism 1342, wherein tether 1320 mayfurther include a second portion 1326, as shown. Unlike tennis trainingaid 1200, however, tether 1320 attaches to racket throat 1350 instead ofto racket strings 1228.

The design of tennis training aid 1300 provides some advantages over thedesign of tennis training aid 1200, including simplification of use andbetter all around feel and function. The design of tennis training aid1300, for example, eliminates the need for volley attachment hooks 1244,string hooks 1230, and tether set up via color coded markings 1224. Thefunctionality of tennis training aid 1300 is also greatly improvedbecause the same tension/pull-back on tether 1320 may be used for allground strokes and volleys instead of having to adjust tether 1320 toaccommodate each unique tennis stroke.

It should also be appreciated that tennis training aid 1300 may includevarious types of embodiments for tether 1320. In FIG. 13 b, for example,an illustration of a single-tether embodiment is provided. A dual-tetherembodiment, however, may also be implemented as shown in FIG. 13 c,wherein tether 1320 and 1328 are each coupled to forearm body 1340 vialocking mechanism 1342. In FIG. 13 d, yet another embodiment isprovided, wherein tether 1320 comprises a Y-shaped portion 1326.

It should be further appreciated that any of the tether embodimentsshown in FIGS. 13 b-13 d can be attached to racket throat 1350 invarious ways. In a preferred embodiment, however, tether 1320 comprisesa Y-shaped portion 1326, which attaches to racket throat 1350 accordingto the steps illustrated in FIGS. 13 e-13 i. Within such embodiment, thetwo ends of Y-shaped portion 1326 are first knotted to form a loop, asshown in FIG. 13 e. Knotted Y-shaped portion 1326 is then passed throughthe open portion of the racket, as shown in FIG. 13 f, and pulled downto the bottom of the racket, as shown in FIG. 13 g. The loop formed bythe knotted Y-shaped portion 1326 is then slipped over the handle of theracket, as shown in FIG. 13 h, and subsequently tightened onto racketthroat 1350 by pulling on tether 1320, as shown in FIG. 13 i.

Several alternative embodiments for attaching the present invention toracket throat 1350 may also be provided. In FIG. 13 j, for example, anillustration of a single-tether embodiment is provided, wherein thesingle-tether 1320 is tied to racket throat 1350, as shown. A similardual-tether embodiment is provided in FIG. 13 k, wherein either tethers1320 and 1328, or Y-tether portion 1326 are tied to racket throat 1350.

The various tether embodiments may also be attached to racket throat1350 via attachment device 1352, as shown in FIGS. 13 l-13 m. In FIG.131, for example, an illustration of a single-tether embodiment isprovided, wherein the single-tether 1320 is attached to racket throat1350 via a ring-type attachment device 1352. A similar dual-tetherembodiment is provided in FIG. 13 m, wherein either tethers 1320 and1328, or Y-tether portion 1326 are attached to racket throat 1350 viaattachment device 1352, as shown. Here, it should be noted that,although a ring-type attachment device 1352 is shown in FIGS. 13 l-13 m,one of ordinary skill in the art would appreciate that similar devicessuch as a clam-shell, wedge or other device may also be used.

By way of example, but not by way of limitation, several schematicsillustrating various uses of the embodiment illustrated in FIG. 13 a areprovided herein. FIG. 13 n, for example, is a view of the embodiment ofFIG. 13 a configured for practicing a one-handed forehand stroke,whereas FIG. 13 o is a view of the same embodiment configured forpracticing a one-handed backhand stroke. Meanwhile, FIGS. 13 p-13 qillustrate exemplary embodiments for practicing a forehand volley andbackhand volley, respectively. And finally, FIGS. 13 r-13 s are providedto show the embodiment of FIG. 13 a configured for respectivelypracticing a two-handed forehand stroke and a two-handed backhandstroke.

It should be recognized that a number of variations of theabove-identified embodiments will be obvious to one of ordinary skill inthe art in view of the foregoing description. Accordingly, the inventionis not to be limited by those specific embodiments and methods of thepresent invention shown and described herein. Rather, the scope of theinvention is to be defined by the following claims and theirequivalents.

1-45. (canceled)
 46. A method of business comprising: offering for salea tennis training aid comprised of: a forearm attachment member operableto be releasably attached to a forearm of a player; and an adjustablewrist positioning member comprising a first portion that is operable tobe connected to the forearm attachment member and a second portionoperable to be connected to a frame of a tennis racket in order to holdthe tennis racket at a desired angle in the player's wrist.